Optima YellowTop YT S 2.7 AGM lead-acid battery 12V 38Ah

The OPTIMA YellowTop YT S 2.7 is a revolutionary high-performance AGM battery that, thanks to the patented SPIRALCELL TECHNOLOGY®, combines the maximum starting power of a starter battery with the cycle stability of a supply battery. With a nominal voltage of 12 V, a capacity of 38 Ah and a high cold start current, it is the ultimate solution for modern vehicles with extensive electrical equipment, high-performance hi-fi systems or demanding off-road accessories in a compact design.

Highlights at a glance

• Dual-purpose functionality: Maximum starting performance and excellent cycle stability in one battery.
• SPIRALCELL TECHNOLOGY®: Unique spiral cell construction for extreme vibration resistance and longer service life.
• High cycle stability: Ideal for vehicles with many electrical consumers and for repeated deep discharges.
• Absolutely maintenance-free and leak-proof: The sealed AGM construction enables installation in almost any position.
• Compact design: High performance for vehicles with limited installation space.

Maximum performance for demanding vehicles

The OPTIMA YellowTop YT S 2.7 was specifically developed for the extreme requirements of modern vehicles that go far beyond mere starting. It is the ideal choice for vehicles with complex sound systems, additional headlights, winches and other energy-intensive consumers. Even in vehicles with seasonal use or many short journeys, which put a heavy strain on conventional batteries, the YellowTop demonstrates its superior performance and longevity.

Superior SPIRALCELL TECHNOLOGY®

At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, highly pure lead spirals are used, which are wrapped in a glass fibre fleece (AGM). This compact and extremely stable design minimises internal resistance, resulting in outstanding starting power, faster charging and unsurpassed vibration resistance. This technology makes the YellowTop the perfect hybrid solution for starting and supplying.

Built for the most demanding conditions

The OPTIMA YellowTop is designed for harsh use. Its sealed construction prevents not only acid leakage but also evaporation, making it absolutely maintenance-free. The robust construction made of impact-resistant polypropylene and up to 15 times higher vibration resistance compared to conventional batteries ensure that vibrations and shocks in demanding driving conditions cannot harm the battery.
 

Features

FAQs about the OPTIMA YellowTop battery

What is the main advantage of SPIRALCELL TECHNOLOGY®?

The spiral cell technology provides an extremely robust and vibration-resistant internal structure, a very low internal resistance for high starting currents and excellent cycle stability. It combines the benefits of a starter battery with those of a deep-cycle battery in a single product.

What is the difference between OPTIMA YellowTop and RedTop?

YellowTop: A dual-purpose battery (starting and supply). It is ideal for vehicles with high energy requirements due to additional consumers (e.g. winch, large hi-fi systems), as it tolerates deep discharges. RedTop: A pure high-performance starter battery for maximum cranking power. It is the right choice when starting is the main load and no deep discharge cycles occur.

For which vehicles is this compact model particularly suitable?

The YT S 2.7 is ideal due to its narrower design for vehicles with limited space in the engine bay, such as many European and Asian models, as well as for custom car projects. Despite its compact size, it supplies enough power for demanding starting procedures and the operation of additional equipment.

Which charger do I need for this AGM battery?

For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended, which has a special charging curve for AGM batteries. This ensures a complete and gentle charge and maximises the lifespan.

How should this lead-acid battery be disposed of?

Lead-acid batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge to any retailer that sells new batteries or to municipal recycling centres to ensure proper recycling.